Automatic hose-coupling.



E. J. ROHRBACHER.

AUTOMATIC HOSE COUPLING.

APPLICATION FILED SEPT. 10, 1914.

Patented July 4, 1916.

WITNESSES.

- ing NET r EDWARD J'. BOHRBACHER, OF SEATTLE, WASHINGTON, ASSIGNOR, BYDIRECT AND MESNE ASSIGNMENTS, TO ROMORT MANUFACTURING COMPANY, OFSEATTLE, WASHINGTON, A CORPORATION OF WASHINGTON.

AUTOMATIC HOSE-COUPLING.

Application filed September 10, 1914.

To all whom it may concern:

Be it known that I, EDWARD J. ROHR- BACHER, citizen of the UnitedStates, residat Seattle, in the county of King and State of Washington,have invented certain new and useful Improvements in AutomaticHose-Couplings, of which the following is a specification.

This invention relates to hose couplings and has for its object theprovision of an automatic coupling device for use in connection' withair pumps whereby the device may be applied to an inlet valve of apneumatlc tire to make separable connection between the air pump and theinterior of the tire and providing for an automatic shut-oft of the airwhen said coupling is removed from the tire valve.

The invention consists of a novel construction, adaptation andcombination of devices, as will be described in the followingspecification, illustrated in the accompanying drawing, and finally setforth in the appended claims. I

In said drawing, Figure 1 is a longitudinal sectional view of anembodiment of my invention shown with -the cut-off valve member liftedby the interposition of a pneumatic tire valveto afford a passagetherethrough for the compressed air. Fig. 2 is a perspective view ofsaid valve member shown detached. Fig. 3 is an underside plan view ofthe same. Fig. 4 is a perspective view of a vention.

Referring to said views, the reference numeral 1 designates a casingformed with a chamber 2 therein having cylindrical wall 3.

A nipple 5 is formed integrally with said.

casing and is provided with a longitudinal bore 6 in axial alinementwiththe chamber. Said nipple is desirably tapered and formed externally withridges 7 for convenient connection with a rubber hose, or the like,con-

nected to an air pump or source of air supply under pressure, not shown.The opposite end of saidcasing from the nipple 5 is provided withexterior screw threads-8. A cap 10 is provided with internal screwthreads to make connection with the casing to Specification of LettersPatent.

gasket employed in the in- Patented July a, 1916.

Serial No. 860,998.

close the bottom of the same, through the medium of the cap web 11. Saidweb is formed with a centrally positioned opening 12. The annular base13 of a rubber gasket 15 (see Flg. 4) is interposed between the end ofsaid casing 1 and the cap web 11, so as to make an air-tight jointtherebetween. Said gasket is further formed with a frusto-conical head16 disposed concentric with respect to its base 13 and is provided witha vertically arranged passage 17.

tending above the upper surface of said member is a centrally positionedboss 22 formed with a plurality of radially directed grooves 23, whichserve to allow the passage of air from the bore 6 into the recess 2,when the boss 22 is in contact with the casing, as will occur when themember 20-is in its uppermost position.

In the undersidepf the member 20 is provided a conical recess 25 whoseinclined wall 'is of somewhat greaterpitch than the opposed inclinedsurface of the gasket-head 16. A relatively sharp circular edge isprovided at the lower extremity of said member, as at 27, to engage withthe gasket 15 at about the junction of the lower edge of said head 16with the base 13 of the latter when the valve member is in itslowermost, or closed, position. A centrally positioned and tubular pin28 projects downwardly from the underside of said valve member into therecess 25 and, when said member is in its lowermost position, such pinextends within the passage 17. Branch openings/30 connect the chamber 25with thebore 31 of may be explained as follows: Normally,

when the house. coupling comprising the subjectmatter of thisinventionis unattached tn a tire valve, the pressure of anfrom an air-pump orstorage tank entering the chamber 2 forces the valve member upward andseats the same firmly upon the "asket 15, the relatively sharp edgeofwhich forms a seat through which air will not readily escape. The pin 28projects slightly within the passage 17 of the gasket. \Vhen a tirevalve, designated by T in Fig. 1, is inserted through the Opening 12 ofthe cap and through the lower portion of said gasket-passage, it engagesthe pin 28 and raises the valve member from its seat to permit thepassage of compressed air through the bore 6 into chamber 2 about thevalve member 20 through the chamber and thence through the branchpassages 30 and through the bore 31 into the tire valve. When the tirevalve is removed from the coupling, the air pressure again forces thevalve member against the gasket and obviates any leakage of air.

Having described my invention, what I claim, is

1. In a hose coupling, a casing formed with a chambered recess, havingcylindrical side walls and a cap secured over said casing inclosing saidrecess and provided with an opening axially of said casing, a gasketsecured between said casing and said cap and formed with a conical headextending into said recess, said gasket having a passage through saidhead in alinement with said cap-opening, and awalve member arranged forlimited longitudinal movement within said recess, said valve memberbeing of smaller diameter than said recess to afford a passageway forair, and being chambered on its underside affording a circular edgeengageable with said gasket, and having a tubular pin arranged centrallyof said chamber adapted to enter the passage of sa d gasket, the tubularbore of said p n" communicating with the chamber of said valve member.

2. In a hose coupling, a casing formed with a chambered recess, havingcylindrical side walls and an integrally connected nipple having anaxially alined bore communicating with said recess and a cap se curedover said casing inclosing said recess and provided with an openingaxially of said casing, a gasket secured between said casing and saidcap and formed with a passage through said head in alinement with saidcap-opening, and awalve member arranged for limited longitudinalmovement within said recess, provided with means upon its upper side toprevent closing of said bore, said valve member being of smallerdiameter than said recess to afford a passageway for air, and beingchambered on its underside affording a circular edge en ageable withsaid gasket, and having a tubular pin arranged centrally of said chamberadapted to enter the passage of said gasket,

the tubular bore of said pin communicating with the chamber of saidvalve member.

3. In a hose coupling, a casing formed with a chambered recess havingcylindrical side walls and a tubular nipple communicating therewith,acap secured over said casing inclosing said recess and provided with anopening axially of said recess, a gasket secured between said casing andsaid cap having an opening in the axis of said recess. and a valvemember arranged for limited longitudinal movement within said recess,said valve member being of smaller diameter than said recess to afford apassageway for air, and being chambered on its underside to provide acircular edge engageable with said gasket.

t. In a hose coupling. a casing formed with a chambered recess havingcylindrical side walls and a tubular nipple communicating therewith, a,cap secured over said casing inclosing saidrccess provided with anopening axially of said recess, a gasket secured between said casing andsaid cap having an opening in the axis of said recess, and avalve memberarranged for limited longitudinal movement within said recess providedwith means upon its upper side to prevent the closing of the passagehaving an opening in the axis of said recess,

and a valve member arranged for limited longitudinal movement withinsaid recess, said valve member being of smaller diameter than saidrecess to afford. a passageway for air and'beingchambered on itsunderside to provide a circular edge engageable with said gasket, saidvalve member having a pin arranged centrally of the chamber providedWith an axially arranged bore communicating at its inner end with saidchamber.

6. A connector of the class described, which embodies a valve-caseprovided with an inlet nipple in one of its end portions and a removableclamping collar disposed on.

its other end portion, a flexible disk provided with an orifice andclamped between said clamping collar and the end surface of said otherend portion of said valve-case to form a flexible end wall thereof, adisk-like valve-member which is provided in one'of its sides with acentrally disposed recess and witha concentrically disposed annularrecess, and a passageway for air extending between said recesses, saidvalve member being loosely disposed within said valve-case with itsrecessed side adjacent to said flexible disk to adapt it to be forciblyengaged With said flexible disk in response to the pressure ofcompressed air within said valve-case.

Signed at Seattle, Wash, this 25thdey Witnesses:

PIERRE BARNES, E. PETERSON.

